Accessing Unity game objects in Eclipse

Hello all,
So I have created a simple terrain in Unity. Also I have a cube (for now) which moves around the terrain. I have written a simple script to move straight, reverse, left and right using the arrow keys. Now I exported this project to eclipse, because I want to introduce some features (like camera) in the game. How can I access the cube object that I created in Unity and modify it in eclipse ?
Say, I want to increase its size through “eclipse”. Can I do that ? If yes then how ? Ask me questions, if you did not understand anything.

Why would you do this when you can do it in unity? Eclipse is a Java IDE you can’t do anything with any unity objects or scripts in eclipse.